Definition List: Term

The word, phrase, graphic, chemical structure, equation, or other “noun” that is being defined or described with a definition in a definition list (two part list). The term occupies the first column of a two-part list and is the subject of the definition or description, which occupies the second column.


id Identifier
rid Reference to an Identifier

Related Elements

A <def-list> may have a <title> naming the entire list, followed by optional headings for terms and their definitions. <term-head> contains the heading over the first (term) column, and <def-head> contains the heading for the second (definition) column; neither serves as a container element for terms or definitions. Individual <term>s and their <def>s are paired in <def-item>s.

Content Model

<!ELEMENT  term         (#PCDATA %term-elements;)*                   >

Expanded Content Model

(#PCDATA | email | ext-link | uri | inline-supplementary-material | related-article | related-object | bold | italic | monospace | overline | roman | sc | strike | underline | alternatives | inline-graphic | chem-struct | inline-formula | abbrev | named-content | styled-content | fn | target | xref | sub | sup)*


Any combination of:

This element may be contained in:



  <def-item><term id="G1">PAP I</term>
  <def><p>poly(A)polymerase I</p></def>
  <term id="G2">PNPase</term>
  <def><p>polynucleotide phosphorylase</p></def>